I have noticed the following 2 different forms for the Sturm-Liouville equation online, in different texts, and in lectures.(adsbygoogle = window.adsbygoogle || []).push({});

[itex][p(x) y']'+q(x)y+\lambda r(x) y = 0[/itex]

[itex]-[p(x) y']'+q(x)y+\lambda r(x) y = 0[/itex]

Does it make a difference? I am guessing not as the negative can just be absorbed into function [itex]p(x)[/itex]?

But I am still scratching my head as to why some texts use the negative sign in front of the 1st term. Is there some advantage to doing so?

Thanks in advance.

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# Sturm-Liouville Equation. Question about different forms.

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